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Found 26 results

  1. Unknown Limestone Fossil

    Possibly a burrow? Found beneath the Chinle formation on US89 in northern Arizona. 4 inches long, 2.5 inches tall, with a slight curve and a flatter bottom side. The rock looks like limestone, but was found on a flat wash without similar rock in the nearby area.
  2. Burrow

    I think this is a burrow, but is a lot more regular than the others I've found. Is there any way to tell what creatures made the burrows? And is this a burrow or something else? This is from the Oxford Clay, Peterborough Member Callovian - Middle Jurassic.
  3. More Massachusetts Fossils

    I found these two today, looking for identification
  4. Pseudo Fossil or Trace Fossil pg 3

    Pseudo fossil or Trace/burrow fossil?
  5. Pseudo Fossil or Trace Fossil pg 2

    Pseudo fossil or carbon?
  6. Pseudo Fossils or Trace Fossils

    Here goes... I picked these up within the last few weeks in the seasonal creek on my property in Elgin, TX. I’ve been looking at a ton of images and reading a lot of information on Google but look forward to your expertise and responses here in the forum. I tried to take decent pictures. pictures of possibly mold and cast.
  7. Hello everyone! I found this specimen also in a creek on a walk through a local park north of Pittsburgh. Thinking it may be a burrow fossil, but if it is, was wondering if there is an actual scientific name for it, so I know how to file it away accordingly under the proper name. Found the term Cruziana online, and wondering if this would qualify. Does anyone have any opinions? Or, if it is a burrow, is there any way of narrowing down what might have made it i.e. trilobites/arthropods etc? Details: 1) Found in isolation/there were no other similar pieces nearby. 2) Measures about 8-12 inches long. Burrow notches are about the width of a penny. 3) Again, found in Carboniferous territory in Western Pennsylvania found in a creek. Thanks everyone!
  8. I found this in a creek bed near Patagonia, AZ. It has the long cylindrical hole, and also has a leaf imprint on the other side. There may be more in there, not sure. But I'm wondering especially about the cylinder. Is it something like a root? Or a clam burrow? Or something else? Thanks!
  9. Upper Pennsylvanian Possible Burrow

    I found this a couple of years ago and have periodically taken it out to examine it as I've found the accumulation of fauna adhering to it's surface as very interesting. For awhile I affectionately referred to it as an accretion (as opposed to a concretion), envisioning a clump of mud rolling around in the wave action of a shoreline picking up bits of dead fauna. But now, with the fairly recent posts that have come up about crustacean burrows, I'm second guessing. On the exterior of this piece are brachiopod shell bits and molds, possible pectinid shell molds, crinoid columnals, and tiny gastropod steinkerns and exterior molds with decoration. The dark clumps appear to be pyrite. There are two depression areas, one on the large end, and a smaller one that is offset of the smaller end. These I speculate to be the exposed chamber, should this be a burrow. Notably within these depressions are oval shaped pellets and an interesting fibrous texture. So, I now defer to your opinions! Thank you for looking!
  10. Dead thing?

    Found this and it looks like there's some sort of appendage. Would appreciate any thoughts!
  11. Beekite-replaced Clam Burrow


    Chalcedony (Beekite) replacing a section of calcareous clam burrow. Kuphus sp. is Cenozoic in age with one extant species. It is reputed to be the longest clam that ever existed.

    © Harry Pristis, 2018

  12. Duck Creek Formation fossil ID

    I went fossil hunting Sunday in the Duck Creek Formation with my daughter. I found 3 small ammonites, numerous echinoids. There were also Inoceramus clams, large burrows and this things. I have no idea what this is. My impressionable mind wants to think it is part of a lobster since I saw the large burrows, but I’m pretty sure that isn’t likely. Since it is only a fragment it may not be identifiable as to belonging to any critter. It is about 3 inches long by 2.5 inches wide. Pic 1 top view. #2 end one #3 end 2 #4 Side view #5 bottom view. Pretty nondescript.
  13. Fossil Wood? Or something else?

    Hi all, I recently found this on a trip to the Jurassic Coast at Dorset and have been intrigued by this find, i'm not an expert on fossil identification and was wondering if there was anything significant about this fossil. it strikes me as being either fossilised wood or an infilled burrow of some kind, however the shine, shape and downward strikes are leaving me somewhat puzzled. i would be grateful for all your potential ideas as to what this could be.
  14. I picked this up a while back. It was part of an old collection and identified as a coprolithe (aka coprolite). After rinsing it off and looking at it under the microscope, I'm thinking it is some sort of burrow. It contains what looks like invertebrate fecal pellets and fishy bits. I am trying to figure out what this little inclusion is. I was thinking it is a bit of fish skull or possibly a crustacean bit. Anyone recognize it? Thanks for your help!
  15. Trace fossil/burrow

    Guessing this is a invert burrow of some sort. Surface find Sarasota Cnty, Florida. Unknown age/formation. Mio-Plio-Pleistocene. Interesting striations encircle the specimen that are at an angle to the overall length of the tear drop shaped specimen. Wondering if anyone knows what ichnogenus this might be and who/what created it. I've seen a few of these over the years but this is the best example I have. Thanks. Regards, Chris
  16. Ft. Worth Items

    I did a creek walk in Fort Worth and found a number of little things and fragments, however I need some thoughts on the front two items. The porous rock and the elongated rock. I was wondering if these may be a coral sample and an infilled burrow...thoughts?
  17. http://www.iflscience.com/plants-and-animals/extinct-megafauna-dug-these-incredible-tunnels-in-brazil/ The giant animals that roamed the Earth before Homo sapiens took hold of the planet have not just left bones for us to find, some have left long tunnels in South America. These “paleotocas”, or "paleoburrows", were rediscovered during the last decade by several researchers, like Heinrich Frank and Amilcar Adamy. Since then, there has been an incredible output of scientific studies investigating, understanding, and explaining these incredible feats of animal engineering. "For most of the fossil vertebrates, you have only the bones and no clues about their living, how they behave, if they live alone or in groups, etc. It is very rare, in Paleontology, to have this kind of information about an extinct species," Professor Frank told IFLScience. "This is the main reason why paleotocas are so important. Additionally, they give us a little bit of information about distribution and abundance of certain animals with different habits." Paleontologists studying a paleoburrow. Heinrich Frank There's a large variety of paleotoca complexes, some with just a single tunnel and others with up to 25 of them. Many tunnels are filled with sediment, but almost 50 can be explored. Researchers have found three tunnel sizes: 0.8 meters, 1.2 meters, and 2 meters (2.6, 3.9, and 6.6 feet) that can extend up to 60 meters (196 feet) long. It is difficult to estimate exactly how many there are out there, as the terrain has changed significantly. So far, over 2,000 burrows have been found, including one just last Wednesday. Scientists believe they were dug between 10,000 and 8,000 years ago, although researchers are yet to properly date them. There’s talk of using mineral deposits or organic material found in these tunnels, but this has not yet been done. The scratches left by the burrowers show that this was not a natural phenomenon. Heinrich Frank The paleotocas were likely dug by giant ground sloths, like the Glossotherium and Scelerodotherhium, which were common in the Americas from the Pliocene to the late Pleistocene. Or they could have been the burrows of giant armadillos. When the tunnels were formed, the region was very different. Back then, the Amazon forest was a vast savannah teeming with giant life like mastodons, giant alligators, and these giant burrowers. Paleotocas were first discovered in Argentina in the late 1920s, but it wasn’t until Brazilian researchers, some working for the Brazilian Geological Survey, stumbled upon them in multiple locations around the country that the scientific interest in these paleontological features actually picked up.
  18. I am looking for the following coprolites: Ammonite coprolite (long and squiggly - looks like modern art) Coprolite with partially digested ammonites Shrimp burrow lined with elongated fecal pellets Herbivore coprolites that have recognizable vegetable matter (I know some nice patties have been found in ND) Double ichnos (coprolite that has been stepped in or bitten) Anything unusual Most of what I have to trade are other coprolites, but I do have a few nice slabs/pieces of petrified wood, turtle shell fragments, gar scales, unknown small vertebra, microfossils, septarian nodules, mineral specimens, etc., that I would be willing to part with for the right specimen(s).
  19. From Comanche Peak

    Found on Comanche Peak, Goodland Formation, Hood Co., TX , need help with ID, is this just a burrow or something else?
  20. One More Bland Blob For Your Opinion

    I suppose these are boring to most people but they have piqued my interest as of late, when I started noticing how many of them there are and how consistent their form. It appears as a trough-shaped thing made of carbonate, lighter than the surrounding black shales. These shales (Haslam Fm, Upper Cret.) are full of odd blobs and lumps and tube-shaped things that I have always ignored, assuming they were non-fossil, but they don't seem to work as burrows or concretions either, and considering the possibility of calcareous algae and the like, I started to wonder. (Do burrows ever have a U-shaped cross-section, and why would they have a lighter, calcareous appearance?) This one is not the best example, I need to pick up more when I see them, but hopefully you can see what I'm looking at. There are some lumpy, grainy shapes as well: Possibly a (sideways) U-shaped cross-section on the end here too but it is faint. Lots of variety of shapes aside from the usual roundish concretions, many nondescript but some recurring patterns among them such as the above. They all have a calcareous/carbonate composition (I assume from the lighter color). Any opinions? Biogenic or not? What would account for the formation of this long trough shape in particular? I will make a point of picking up more/better samples and add them here.
  21. Maybe y'all can help me with this one, too. This one is larger, about 8" x 10" and 5" thick. It makes me think of a fossilized infilled burrow in the matrix with associated crab? Shrimp? Material. But I could be completely off the mark. Any thoughts? A close up: Had to make an album as the files were too large to upload: http://imgur.com/a/SstBG
  22. Ichnology Help

    Hello all. I stumbled upon this forum as a means of finding some help with idetifying some burrows for a research project I am conducting. I have amanged to idetify some Chondrites from the area however all of the other traces have me stumped. My lack of previous knowledge in ichnology doesn't help either. They are both from the Jan Juc Marl (Oligocene) in south western Victoria, Australia. Here's a couple I'll start with: This first one is approximately 5cm long. It has a coarse grained infill, which is a sandy/shelly hash (calcarous) with a very fine grained clay lining. It's about 1cm wide and is orientated as found in the field, up is towards the top (younging direction) of the cliff face. As seen, infill is the same as the surrounding sediment/matrix. I thought it could possible be Skolithos, however they aren't clumped like other examples I have seen. This second burrow is apprximately the same diameter and is filled with the same sediment. The lining is a Glauconite rich clay and branching is evident. Scale is on the right, the cut Chondrites filled layer is apprximately 2cm thick. I too thought this may be Skolithos, but after finding this photo it is not directly vertical and is brached. If more information is necessary, let me know and I'll provide some more. Hopefully one of you ichno-gurus can shed some light on these. If you feel you are up to the task, let me know and I'll post some photos of the other ones. Cheers, Pete.
  23. Mazon Creek - Essex Location - Burrows?

    Hi Folks- Any thoughts on the attached. I've always thought it was a burrow of some sort. I also think there is something else to the right of the burrow shapes on the first nodule (that is white and looks fauna like)- the same fauna-like item is above the "burrows" on the second nodule (on the right). Any thoughts?